Shopping around for black jewellery, you many come across a term called ‘French Jet’. While it sounds romantic or even like a gemstone in its own right, French Jet simply a fancy word for good old black glass.
It became popular during the Victorian period (1837 – 1901) when black jewellery was very fashionable. Genuine Jet (which is a real gemstone, most famously found in the Whitby area on the east coast of England) was the most sought after material for making black Victorian jewellery, but due to demand and increasing scarcity it was became expensive. Black glass was a much cheaper alternative.
Where the actual name French Jet comes from is unclear. The glass beads and stones themselves were usually made in the great glass making countries of Europe, such as Austria and the Czechoslovakia regions, and then sent through to other countries (including England and France) to be made into jewellery.
Other black materials used in Victorian mourning jewellery are: onyx, Vulcanite (a type of early rubber), Gutta Percha, genuine real jet, and bog oak (ancient fossilized wood type material usually found in Ireland).
Quick glance identity to mourning jewellery materials:
Bog Oak = usually only seen in brooches. Look under a magnifying glass to see wood grain texture. Often depicts Irish scenes, castles and motifs.
Gutta Percha = rare, similar to Vulcanite except one important difference – the taste test. Be careful with this, as moisture can permanently stain old Gutta Percha. With a dry tip of the tongue, gently press your tongue on the jewellery. Gutta Percha tastes very salty!
Some gorgeous vintage French Jet jewellery ..